* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-mid) 50%, var(--bg-gradient-end) 100%);
            color: var(--text-primary);
            min-height: 100vh;
            padding: 20px;
            transition: background 0.3s ease, color 0.3s ease;
            /* Zoom predefinito 90% per miglior visualizzazione */
            zoom: 0.9;
        }

        .container {
            max-width: 100%;
            margin: 0 auto;
            background: var(--bg-secondary);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
            overflow: visible; /* necessario per far funzionare position: sticky dei filtri */
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }

        .header {
            background: linear-gradient(135deg, var(--portal-primary) 0%, var(--portal-secondary) 50%, var(--portal-tertiary) 100%);
            color: var(--text-inverse);
            padding: 30px 40px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3), 0 0 40px rgba(0, 0, 0, 0.2);
            position: relative;
            overflow: visible;
            transition: all 0.3s ease;
        }
        
        /* Colori portali dinamici */
        body[data-portal="nl"] {
            --portal-primary: #2e7d32;
            --portal-secondary: #388e3c;
            --portal-tertiary: #43a047;
            --accent-primary: #2e7d32;
            --accent-secondary: #388e3c;
            --accent-tertiary: #43a047;
            --accent-light: #66bb6a;
        }
        
        body[data-portal="she"] {
            --portal-primary: #2563eb;
            --portal-secondary: #3876da;
            --portal-tertiary: #4a90e2;
            --accent-primary: #2563eb;
            --accent-secondary: #3876da;
            --accent-tertiary: #4a90e2;
            --accent-light: #5ba0f5;
        }
        
        body[data-portal="hp"] {
            --portal-primary: #6b1a0a;
            --portal-secondary: #85200c;
            --portal-tertiary: #a0260f;
            --accent-primary: #6b1a0a;
            --accent-secondary: #85200c;
            --accent-tertiary: #a0260f;
            --accent-light: #b8321a;
        }
        
        /* Badge portale */
        .portal-badge {
            display: inline-block;
            padding: 2px 8px;
            border-radius: 12px;
            font-size: 0.75em;
            font-weight: 600;
            margin-left: 8px;
            background: rgba(255, 255, 255, 0.25);
            border: 1px solid rgba(255, 255, 255, 0.4);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        
        /* Header in dark mode: sfondo verde-grigio scuro con bordo verde */
        [data-theme="dark"] .header {
            background: #1a2a1a;
            border-bottom: 3px solid #4CAF50;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.8), 0 0 30px rgba(76, 175, 80, 0.2);
        }
        
        [data-theme="dark"] .header h1,
        [data-theme="dark"] .header p {
            color: #b8d4b8;
        }
        
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        
        .header-title {
            text-align: left;
        }

        .header h1 {
            font-size: 2em;
            margin-bottom: 5px;
            font-weight: 600;
            letter-spacing: -0.5px;
        }

        .header p {
            font-size: 0.95em;
            opacity: 0.85;
            font-weight: 400;
        }
        
        .header-actions {
            display: flex;
            gap: 12px;
            align-items: center;
            margin-right: 80px; /* Spazio per il toggle button */
        }
        
        .btn-header {
            background: rgba(255, 255, 255, 0.2);
            color: var(--text-inverse);
            border: 1.5px solid rgba(255, 255, 255, 0.3);
            padding: 10px 20px;
            font-size: 0.9em;
            font-weight: 500;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: all 0.25s ease;
            backdrop-filter: blur(10px);
            white-space: nowrap;
        }
        
        .btn-header:hover {
            background: rgba(255, 255, 255, 0.3);
            border-color: rgba(255, 255, 255, 0.5);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }
        
        .btn-header-secondary {
            background: rgba(255, 255, 255, 0.15);
            border-color: rgba(255, 255, 255, 0.25);
            opacity: 0.8;
            font-size: 0.85em;
        }

        .btn-header-secondary:hover {
            opacity: 1;
        }
        
        /* Pulsanti header in dark mode: verde chiaro come upload */
        [data-theme="dark"] .btn-header {
            background: #b8d4b8;
            color: #1a2a1a;
            border: 1.5px solid #b8d4b8;
            box-shadow: 0 0 15px rgba(184, 212, 184, 0.4);
        }
        
        [data-theme="dark"] .btn-header:hover {
            background: #c8e4c8;
            border-color: #c8e4c8;
            box-shadow: 0 0 20px rgba(184, 212, 184, 0.6);
        }
        
        [data-theme="dark"] .btn-header-secondary {
            background: #b8d4b8;
            color: #1a2a1a;
            border-color: #b8d4b8;
            box-shadow: 0 0 15px rgba(184, 212, 184, 0.4);
        }
        
        [data-theme="dark"] .btn-header-secondary:hover {
            background: #c8e4c8;
            border-color: #c8e4c8;
            box-shadow: 0 0 20px rgba(184, 212, 184, 0.6);
        }

        /* S150: Header Dropdown - Stagioni */
        .header-dropdown {
            position: relative;
            display: inline-block;
        }

        .header-dropdown-trigger {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .header-dropdown-chevron {
            font-size: 0.65em;
            transition: transform 0.2s ease;
            line-height: 1;
        }

        .header-dropdown.open .header-dropdown-chevron {
            transform: rotate(180deg);
        }

        .header-dropdown-menu {
            display: none;
            position: absolute;
            top: calc(100% + 6px);
            right: 0;
            min-width: 220px;
            background: var(--bg-primary);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
            z-index: 1000;
            padding: 4px 0;
            animation: headerDropdownFadeIn 0.15s ease;
        }

        .header-dropdown.open .header-dropdown-menu {
            display: block;
        }

        @keyframes headerDropdownFadeIn {
            from { opacity: 0; transform: translateY(-4px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .header-dropdown-item {
            display: flex;
            align-items: center;
            gap: 10px;
            width: 100%;
            padding: 10px 16px;
            background: none;
            border: none;
            font-size: 0.9em;
            color: var(--text-primary);
            cursor: pointer;
            text-align: left;
            transition: background 0.15s ease;
        }

        .header-dropdown-item:hover {
            background: var(--table-hover);
        }

        .header-dropdown-item-action {
            font-weight: 600;
            color: var(--accent-primary);
        }

        .header-dropdown-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            border: 1.5px solid var(--text-secondary);
            background: transparent;
            flex-shrink: 0;
            transition: all 0.15s ease;
        }

        .header-dropdown-item-filter.active .header-dropdown-dot {
            background: var(--accent-primary);
            border-color: var(--accent-primary);
        }

        .header-dropdown-item-filter.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        .header-dropdown-separator {
            height: 1px;
            background: var(--border-color);
            margin: 4px 0;
        }

        /* Dark mode overrides per dropdown header */
        [data-theme="dark"] .header-dropdown-menu {
            background: var(--bg-secondary);
            border-color: var(--border-color);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
        }

        [data-theme="dark"] .header-dropdown-item:hover {
            background: var(--table-hover);
        }

        [data-theme="dark"] .header-dropdown-item-action {
            color: #b8d4b8;
        }

        [data-theme="dark"] .header-dropdown-item-filter.active .header-dropdown-dot {
            background: #b8d4b8;
            border-color: #b8d4b8;
        }

        /* Accessibilita: prefers-reduced-motion */
        @media (prefers-reduced-motion: reduce) {
            .header-dropdown-chevron {
                transition: none;
            }
            .header-dropdown-menu {
                animation: none;
            }
            .header-dropdown-dot {
                transition: none;
            }
            .header-dropdown-item {
                transition: none;
            }
        }

        /* Toggle tema button */
        .theme-toggle {
            position: absolute;
            top: 20px;
            right: 30px;
            background: rgba(255, 255, 255, 0.2);
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--radius-pill);
            padding: 8px 20px;
            cursor: pointer;
            font-size: 1.2em;
            transition: all 0.3s ease;
            z-index: 10;
            backdrop-filter: blur(10px);
        }
        
        .theme-toggle:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: scale(1.05);
        }

        .content {
            padding: 24px;
        }

        /* Upload Section - Sottile ed Elegante */
        .upload-section {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 16px 24px;
            margin-bottom: 20px;
            transition: all 0.25s ease;
            box-shadow: var(--shadow-sm);
        }

        .upload-section:hover {
            border-color: var(--accent-light);
            box-shadow: var(--shadow-md);
        }

        .upload-section.dragover {
            border-color: var(--accent-primary);
            border-width: 2px;
            background: var(--table-hover);
        }
        
        .upload-content {
            display: flex;
            justify-content: flex-start;
            align-items: center;
            gap: 15px;
        }
        
        .upload-info {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .upload-arrow {
            font-size: 1.2em;
            color: var(--text-secondary);
            opacity: 0.7;
        }
        
        .upload-icon-small {
            font-size: 1.5em;
        }
        
        /* Spring controls in upload section */
        .spring-controls-upload {
            display: flex;
            gap: 12px;
            align-items: center;
            margin-left: auto;
        }
        
        .spring-file-select-upload {
            background: var(--bg-secondary);
            color: var(--text-primary);
            border: 1.5px solid var(--border-color);
            padding: 8px 12px;
            border-radius: 8px;
            font-size: 0.9em;
            cursor: pointer;
            transition: all 0.25s ease;
        }
        
        .spring-file-select-upload:hover {
            border-color: var(--accent-primary);
        }
        
        .btn-spring-upload {
            background: var(--accent-primary);
            color: var(--text-inverse);
            border: none;
            padding: 8px 20px;
            font-size: 0.9em;
            font-weight: 500;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        
        .btn-spring-upload:hover {
            background: var(--accent-secondary);
            transform: translateY(-1px);
        }
        
        /* Spring button in dark mode */
        [data-theme="dark"] .btn-spring-upload {
            background: #b8d4b8;
            color: #1a2a1a;
            box-shadow: 0 0 15px rgba(184, 212, 184, 0.4);
        }
        
        [data-theme="dark"] .btn-spring-upload:hover {
            background: #c8e4c8;
            box-shadow: 0 0 20px rgba(184, 212, 184, 0.6);
            transform: translateY(-2px);
        }
        
        .upload-label {
            font-size: 0.95em;
            font-weight: 500;
            color: var(--text-primary);
        }
        
        .btn-upload {
            background: var(--accent-primary);
            color: var(--text-inverse);
            border: none;
            padding: 12px 32px;
            font-size: 0.95em;
            font-weight: 600;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: all 0.25s ease;
            white-space: nowrap;
            min-height: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        
        .btn-upload:hover {
            background: var(--accent-secondary);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }
        
        /* Upload button in dark mode - Verde chiaro come header */
        [data-theme="dark"] .btn-upload {
            background: #b8d4b8;
            color: #1a2a1a;
            box-shadow: 0 0 15px rgba(184, 212, 184, 0.4);
        }
        
        [data-theme="dark"] .btn-upload:hover {
            background: #c8e4c8;
            box-shadow: 0 0 20px rgba(184, 212, 184, 0.6);
            transform: translateY(-2px);
        }

        .file-input-wrapper {
            position: relative;
            display: inline-block;
            padding: 4px;
        }

        .file-input {
            position: absolute;
            opacity: 0;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            cursor: pointer;
            z-index: 1;
        }

        .btn {
            background: var(--accent-primary);
            color: var(--text-inverse);
            border: none;
            padding: 12px 24px;
            font-size: 0.95em;
            font-weight: 600;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: all 0.25s ease;
            display: inline-block;
            text-decoration: none;
            box-shadow: 0 0 20px rgba(0, 255, 65, 0.3);
        }

        .btn:hover {
            background: var(--accent-secondary);
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(0, 255, 65, 0.5), var(--shadow-md);
        }

        .btn:disabled,
        .btn.disabled {
            background: var(--color-disabled-light);
            cursor: not-allowed;
            transform: none;
            opacity: 0.6;
            pointer-events: none;
        }

        /* Button variants (STRUCT-006, JI-P2-01 unified radius) */
        .btn-success {
            background: var(--color-success);
            color: var(--text-inverse);
            border: none;
            padding: 10px 20px;
            font-weight: 600;
            border-radius: var(--radius-md);
            cursor: pointer;
        }
        .btn-success:hover { background: var(--color-success-dark); }

        .btn-danger {
            background: var(--color-danger);
            color: var(--text-inverse);
            border: none;
            padding: 10px 20px;
            font-weight: 600;
            border-radius: var(--radius-md);
            cursor: pointer;
        }
        .btn-danger:hover { background: var(--color-danger-dark); }

        .btn-warning {
            background: var(--color-warning);
            color: var(--text-inverse);
            border: none;
            padding: 10px 20px;
            font-weight: 600;
            border-radius: var(--radius-md);
            cursor: pointer;
        }
        .btn-warning:hover { background: var(--color-warning-dark); }

        .btn-neutral {
            background: #666;
            color: var(--text-inverse);
            border: none;
            padding: 10px 20px;
            font-weight: 600;
            border-radius: var(--radius-md);
            cursor: pointer;
        }
        .btn-neutral:hover { background: #555; }

        .btn-sm {
            padding: 6px 12px;
            font-size: 0.85em;
        }

        /* SPLIT-009 QW3: Input date compatti (SPRING filters) */
        .input-date-sm {
            padding: 4px 8px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            font-size: 0.9em;
            background: var(--bg-primary);
            color: var(--text-primary);
        }

        /* Skip-to-content link per accessibilità tastiera */
        .skip-link {
            position: absolute;
            top: -40px;
            left: 0;
            z-index: 10000;
            padding: 8px 16px;
            background: var(--accent-primary);
            color: white;
            text-decoration: none;
            font-weight: 600;
            border-radius: 0 0 8px 0;
            transition: top 0.2s ease;
        }

        .skip-link:focus {
            top: 0;
        }

        /* Focus states per accessibilità */
        .btn:focus-visible,
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible,
        [role="button"]:focus-visible {
            outline: 3px solid var(--accent-primary);
            outline-offset: 2px;
            box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-primary) 20%, transparent);
        }
        
        /* Loading state per bottoni */
        .btn.loading {
            position: relative;
            color: transparent;
            pointer-events: none;
        }
        
        .btn.loading::after {
            content: '';
            position: absolute;
            width: 16px;
            height: 16px;
            top: 50%;
            left: 50%;
            margin-left: -8px;
            margin-top: -8px;
            border: 2px solid #ffffff;
            border-radius: 50%;
            border-top-color: transparent;
            animation: spinner 0.6s linear infinite;
        }
        
        @keyframes spinner {
            to { transform: rotate(360deg); }
        }
        
        /* Tooltip base */
        [data-tooltip] {
            position: relative;
        }
        
        [data-tooltip]:hover::before,
        [data-tooltip]:focus::before {
            content: attr(data-tooltip);
            position: absolute;
            bottom: 100%;
            left: 50%;
            transform: translateX(-50%);
            padding: 6px 10px;
            background: #333;
            color: #fff;
            border-radius: 4px;
            font-size: 0.85em;
            white-space: nowrap;
            z-index: 1000;
            margin-bottom: 5px;
            pointer-events: none;
        }
        
        [data-tooltip]:hover::after,
        [data-tooltip]:focus::after {
            content: '';
            position: absolute;
            bottom: 100%;
            left: 50%;
            transform: translateX(-50%);
            border: 5px solid transparent;
            border-top-color: #333;
            margin-bottom: -5px;
            z-index: 1000;
            pointer-events: none;
        }

        .btn-secondary {
            background: transparent;
            border: 1.5px solid var(--accent-primary);
            color: var(--accent-primary);
        }

        .btn-secondary:hover {
            background: var(--accent-primary);
            color: var(--text-inverse);
        }

        /* S150: btn-season-all/open/closed rimossi - spostati nel dropdown header */

        /* Pulsanti in dark mode: verde chiaro come upload */
        [data-theme="dark"] .btn {
            background: #b8d4b8;
            color: #1a2a1a;
            border: 1.5px solid #b8d4b8;
            box-shadow: 0 0 15px rgba(184, 212, 184, 0.4);
        }
        
        [data-theme="dark"] .btn:hover {
            background: #c8e4c8;
            border-color: #c8e4c8;
            box-shadow: 0 0 20px rgba(184, 212, 184, 0.6);
        }

        /* Fix SPLIT-008 F1: btn.loading text must stay transparent in dark mode */
        [data-theme="dark"] .btn.loading {
            color: transparent;
        }
        
        [data-theme="dark"] .btn-secondary {
            background: #b8d4b8;
            color: #1a2a1a;
            border-color: #b8d4b8;
            box-shadow: 0 0 15px rgba(184, 212, 184, 0.4);
        }
        
        [data-theme="dark"] .btn-secondary:hover {
            background: #c8e4c8;
            border-color: #c8e4c8;
            color: #1a2a1a;
            box-shadow: 0 0 20px rgba(184, 212, 184, 0.6);
        }

        /* Schermi medi: riduzione padding body/header */
        @media (max-width: 1280px) {
            body {
                padding: 12px;
            }

            .header {
                padding: 20px 24px;
            }
        }

        /* ========================================
           RESP-002: Header responsive (mobile 768px)
           ======================================== */
        @media (max-width: 768px) {
            body {
                padding: 10px;
                zoom: 1; /* Disabilita zoom 0.9 su mobile - già piccolo */
                -webkit-font-smoothing: antialiased; /* Testo nitido su Retina */
                -moz-osx-font-smoothing: grayscale;
            }

            .header {
                padding: 16px;
            }

            .header-content {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .header h1 {
                font-size: 1.4em;
            }

            .header p {
                font-size: 0.85em;
            }

            .header-actions {
                display: flex;
                flex-wrap: wrap;
                gap: 8px;
                margin-right: 0; /* Rimuovi spazio per theme-toggle fisso */
                width: 100%;
            }

            .btn-header {
                padding: 8px 12px;
                font-size: 0.82em;
            }

            .btn-header-secondary {
                font-size: 0.78em;
                padding: 7px 10px;
            }

            /* Theme toggle: posizione adattata su mobile */
            .theme-toggle {
                top: 12px;
                right: 12px;
                padding: 6px 14px;
                font-size: 1em;
            }

            /* Upload section: stack su mobile */
            .upload-content {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }

            .spring-controls-upload {
                margin-left: 0;
                flex-wrap: wrap;
                width: 100%;
            }

            .btn-upload,
            .btn-spring-upload {
                width: 100%;
                justify-content: center;
            }

            .content {
                padding: 12px;
            }
        }

        /* RESP-007: Touch targets >= 44px su mobile (bottoni generali) */
        @media (max-width: 768px) {
            .btn {
                min-height: 44px;
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }

            .btn-header {
                min-height: 44px;
            }

            .btn-success,
            .btn-danger,
            .btn-warning,
            .btn-neutral {
                min-height: 44px;
            }
        }